The bar, which many have mistaken for a bar of soap, features peppermint oil, cinnamon oil and, the offending ingredient, aduki beans — a popular ingredient in many Asian food dishes.

Although they're meant to be used as dry massage beads, when they're used in the shower, the beans fall out into the drain where, apparently, conditions are perfect for the plant to sprout and grow. Once fully grown, the sprouts measure approximately 18 to 25 centimeters tall, or about 7 to 10 inches.

Even though confused customers have posted pictures of the bizarre drain-plants on social media, the folks at Lush don't seem to be bothered.

We use organic aduki beans to create a texture in the massage bar, so that you've got small bead like shapes to massage the muscles. In order for the beans to germinate they must have been left in the shower for a few days. The results you get just go to show how fresh the ingredients really are.

Um… yay for that, I guess?

Moral of the story: Read the instructions on your Lush products thoroughly before using — or you might end up with plants growing from who knows where.